Instruction manual – AQ 110 arc protection unit
40 (80
)
6.2.2
I/O
DESCRIPTION
AQ 110P:
I/O
Function
IL1,IL2,IL3
Monitoring of phase overcurrent threshold level at
incoming feeder 1
Io
Monitoring of residual current threshold level at
incoming feeder 1
S1
Monitoring of arc light in incoming feeder 1 cable
compartment and bus-duct (Zone 1)
S2, S3
Monitoring of arc light in incoming feeder 1
breaker compartment and incoming feeder
busbar compartment (Zone 2)*
HSO1
Sending overcurrent information to AQ101 units
HSO2
Sending master trip information to AQ101 units
BO1
Not in use
BI1
Not in use
BI2
Receiving light information from AQ 101 units of
busbar
T1
Trip of incoming main circuit breaker CB1 in case
of fault in zones 1 and 2 and in case of CBFP(**)
of CB4-x.
T2
Trip of upstream circuit breaker CB2 in case of
fault in zone 1 and in case of CBFP(**) of CB1
T3
Not in use
T4
Trip alarm (if in use)
SF
System failure dry contact for alarming
*Sensor channels S4 and S5 may be utilized if more sensors are required in
Zone 2
**CBFP dipswitch must be set to ON position in order to activate the CBFP
function.
